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ST72521M Datasheet(HTML) 6 Page - STMicroelectronics

Part No. ST72521M
Description  8-BIT MCU WITH NESTED INTERRUPTS, FLASH, 10-BIT ADC, FIVE TIMERS, SPI, SCI, I2C, CAN INTERFACE
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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ST72521M Datasheet(HTML) 6 Page - STMicroelectronics

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ST72521M/R/AR
6/11
27
21
VAREF
I
Analog Reference Voltage for ADC
28
22
VSSA
S
Analog Ground Voltage
29
23
VDD_3
S
Digital Main Supply Voltage
30
24
VSS_3
S
Digital Ground Voltage
31
-
PG4
I/O TT
X
X
X
X
Port G4
32
-
PG5
I/O TT
X
X
X
X
Port G5
33
25
PF0/MCO/AIN8
I/O CT
X
ei1
X
X
Port F0
Main clock
out (fOSC/2)
ADC Analog
Input 8
34
26
PF1 (HS)/BEEP
I/O CT HS
X
ei1
X
X
Port F1
Beep signal output
35
27
PF2 (HS)
I/O CT HS
X
ei1
X
X
Port F2
36
28
PF3/OCMP2_A/AIN9
I/O CT
X
X
X
X
Port F3
Timer A Out-
put Compare
2
ADC Analog
Input 9
37
29
PF4/OCMP1_A/AIN10
I/O CT
X
X
X
X
Port F4
Timer A Out-
put Compare
1
ADC Analog
Input 10
38
30
PF5/ICAP2_A/AIN11
I/O CT
X
X
X
X
Port F5
Timer A Input
Capture 2
ADC Analog
Input 11
39
31
PF6 (HS)/ICAP1_A
I/O CT HS
X
X
X
X
Port F6
Timer A Input Capture 1
40
32
PF7 (HS)/EXTCLK_A
I/O CT HS
X
X
X
X
Port F7
Timer A External Clock
Source
41
33
VDD_0
S
Digital Main Supply Voltage
42
34
VSS_0
S
Digital Ground Voltage
43
35
PC0/OCMP2_B/AIN12
I/O CT
X
X
X
X
Port C0
Timer B Out-
put Compare
2
ADC Analog
Input 12
44
36
PC1/OCMP1_B/AIN13
I/O CT
X
X
X
X
Port C1
Timer B Out-
put Compare
1
ADC Analog
Input 13
45
37
PC2 (HS)/ICAP2_B
I/O CT HS
X
X
X
X
Port C2
Timer B Input Capture 2
46
38
PC3 (HS)/ICAP1_B
I/O CT HS
X
X
X
X
Port C3
Timer B Input Capture 1
47
39
PC4/MISO/ICCDATA
I/O CT
X
X
X
X
Port C4
SPI Master In
/ Slave Out
Data
ICC Data In-
put
48
40
PC5/MOSI/AIN14
I/O CT
X
X
X
X
Port C5
SPI Master
Out / Slave In
Data
ADC Analog
Input 14
49
-
PH0
I/O TT
X
X
X
X
Port H0
50
-
PH1
I/O TT
X
X
X
X
Port H1
51
-
PH2
I/O TT
X
X
X
X
Port H2
52
-
PH3
I/O TT
X
X
X
X
Port H3
53
41
PC6/SCK/ICCCLK
I/O CT
X
X
X
X
Port C6
SPI Serial
Clock
ICC Clock
Output
Pin n
°
Pin Name
Level
Port
Main
function
(after
reset)
Alternate function
Input
Outpu t


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